Positioning tool for accelerator coupler

Abstract

The utility model relates to a positioning tool for an accelerator coupler, which comprises a movable base, a second adjusting platform movably arranged on the movable base, and a third direction adjusting mechanism connected with the second adjusting platform and the movable base and used for adjusting the height and levelness of the second adjusting platform. The mounting bracket is used for mounting the coupler and is movably arranged on the second adjusting platform through an adjusting mechanism, and the adjusting mechanism is used for adjusting the position and the horizontal deviation angle of the mounting bracket in the horizontal direction; according to the adjusting device, the installation support and the accelerator coupler on the installation support can be adjusted in three translational degrees of freedom and three rotational degrees of freedom, the adjusting directions are diversified, coarse adjustment and fine adjustment are combined, the adjusting efficiency is improved, and the adjusting precision is higher. By means of the positioning tool, even if manual operation is adopted, the efficiency is far higher than that of pure manual adjustment.

Description

Technical Field

[0001] The utility model relates to the technical field of particle accelerator installation, in particular to a positioning tool for an accelerator coupler. Background Art

[0002] Boron neutron capture therapy (BNCT) is one of the most advanced cancer treatments in the world. The patient is first injected with a boron-containing drug, which has a strong affinity for cancer cells and rapidly accumulates within them, effectively "marking" them while remaining relatively undistributed in other tissues. The patient is then irradiated with neutrons, which typically last less than an hour, with the entire treatment typically requiring only a single dose. When the neutrons are captured by the boron within the cancer cells, they produce highly lethal alpha particles and lithium ions, which precisely "kill" the cancer cells.

[0003] A boron neutron capture therapy device primarily consists of an ion source, accelerator, high-energy beamline, target, and beam shaper. The accelerator accelerates charged particles to the required energy level, providing the necessary initial energy for subsequent nuclear reactions that produce neutrons. It also helps shape the initial charged particle beam into a high-quality, high-density, and well-collimated beam. This beam can be more efficiently transmitted and focused, improving the precision and effectiveness of treatment.

[0004] The accelerator consists of a coupler and a cavity. The coupler can effectively transfer external input radio frequency energy to the accelerator's cavity, while ensuring that the power is evenly distributed among various parts. Therefore, the precise installation of the coupler helps maintain the stability of the electromagnetic field in the accelerator and ensure the continuous acceleration of charged particles.

[0005] However, existing methods for disassembling and assembling accelerator couplers often rely on manual positioning based on visual inspection and experience, which can easily lead to large positioning errors. This can lead to inaccurate connections between the coupler and the device interface on the cavity, affecting the accelerator's airtightness and equipment life. Therefore, it is necessary to design a positioning fixture for the accelerator coupler to improve the connection accuracy between the coupler and the device interface on the cavity. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a positioning tool for an accelerator coupler.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A positioning fixture for an accelerator coupler, comprising:

[0009] Mobile base,

[0010] a second adjusting platform movably arranged on the moving base,

[0011] a third direction adjusting mechanism connecting the second adjusting platform and the moving base for adjusting the height and levelness of the second adjusting platform;

[0012] a mounting bracket for mounting the coupler, movably arranged on the second adjusting platform by an adjusting mechanism for adjusting the position of the mounting bracket in the horizontal direction and the horizontal offset angle.

[0013] Preferably, the adjusting mechanism comprises a first adjusting platform, a first direction adjusting mechanism and a second direction adjusting mechanism, the mounting bracket is fixed on the first adjusting platform, and the first adjusting platform is movably connected with the second direction adjusting mechanism through the first direction adjusting mechanism;

[0014] the first direction adjusting mechanism is used for adjusting the position of the mounting bracket in the first direction,

[0015] the second direction adjusting mechanism is used for adjusting the position of the first adjusting platform and the mounting bracket thereon in the second direction;

[0016] the second direction adjusting mechanism is linked with the first direction adjusting mechanism to adjust the horizontal offset angle of the first adjusting platform and the mounting bracket thereon.

[0017] Preferably, the first direction adjusting mechanism comprises two first movable ends capable of moving independently in the first direction, and the second direction adjusting mechanism comprises two groups of second sliding components arranged in parallel and independently controlled, each of the second sliding components extends in the second direction and comprises a second movable end;

[0018] the two first movable ends of the first direction adjusting mechanism are respectively connected with the second movable ends of the two groups of second sliding components.

[0019] Preferably, the first direction adjusting mechanism further comprises a first sliding rail, and the two first movable ends are first sliding blocks which are sleeved on the first sliding rail in a spaced manner;

[0020] the second sliding component further comprises a second sliding rail, and the second movable end is a second sliding block, one second sliding block is sleeved on one second sliding rail in a sliding manner, and the second sliding rail extends in the second direction;

[0021] the first sliding rail is transversely arranged on the two second sliding rails, and the two first sliding blocks are rotatably connected with the two second sliding blocks.

[0022] Preferably, the first direction adjusting mechanism further comprises a first power member, a fixed end of the first power member is fixedly connected with one of the first sliders, and an output end is fixedly connected with the first adjusting platform to drive the first adjusting platform and the mounting bracket to move in the first direction.

[0023] Preferably, the second movable end is provided with a positioning cylinder, and a lower surface of the first movable end is provided with a positioning sleeve which is sleeved on the positioning cylinder, so that the first movable end is rotationally connected with the corresponding second movable end.

[0024] Preferably, the third direction adjusting mechanism comprises four independently controlled electric push rods, and the four electric push rods are respectively arranged at four corners of the second adjusting platform and are rotationally connected with the second adjusting platform.

[0025] Preferably, the mounting bracket comprises a top arc-shaped support and a support frame, the support frame is connected with the adjusting mechanism and the top arc-shaped support, and both sides of the top arc-shaped support are further provided with horizontally extending extension plates, and the extension plates are provided with positioning holes.

[0026] Compared with the prior art, the utility model has the beneficial effects that:

[0027] The positioning tool for the accelerator coupler can realize large-range position adjustment of the positioning tool, so that the positioning tool and the accelerator coupler thereon can be quickly moved to a general position, and then three translational degrees of freedom and three rotational degrees of freedom, including a height direction, a horizontal front-rear direction, a horizontal left-right direction, a horizontal degree and a horizontal offset angle, are adjusted by the third direction adjusting mechanism and the adjusting mechanism, so that the mounting bracket and the accelerator coupler thereon can be adjusted in all directions, the adjusting direction is various, the coarse adjustment and the fine adjustment are combined, the adjusting efficiency is improved, and the adjusting precision is higher. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0029] Figure 1 It is a structural schematic view of the positioning tool of the utility model embodiment.

[0030] Figure 2Another angle structure schematic view of the positioning tool of the embodiment of the utility model.

[0031] Figure 3 The connection schematic view of the first direction adjusting mechanism and the second direction adjusting mechanism of the embodiment of the utility model.

[0032] Figure 4 The structure schematic view of the second direction adjusting mechanism of the embodiment of the utility model.

[0033] Figure 5 The structure schematic view of the first direction adjusting mechanism of the embodiment of the utility model.

[0034] Figure 6 The schematic view of the positioning tool of the embodiment of the utility model is equipped with a coupler.

[0035] Figure 7 The schematic view of the positioning tool of the embodiment of the utility model is equipped with a coupler.

[0036] Mark explanation:

[0037] 10, mobile base; 11, frame; 12, bottom platform; 13, universal wheel; 20, first direction adjusting mechanism; 21, first adjusting platform; 22, first slide rail; 23, first sliding block; 24, positioning sleeve; 25, first linear lead screw motor; 26, first screw nut; 27, first nut connecting seat; 28, fixed plate; 281, through hole; 30, second direction adjusting mechanism; 31, second slide rail; 32, second sliding block; 33, positioning cylinder; 34, second linear lead screw motor; 35, second screw nut; 36, second nut connecting seat; 37, mounting plate; 40, third direction adjusting mechanism; 41, second adjusting platform; 42, electric push rod; 50, mounting bracket; 51, top arc-shaped supporting piece; 511, mounting groove; 512, extension plate; 513, positioning hole; 52, support frame; 60, coupler; 70, cavity. Specific implementation

[0038] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of protection of the utility model.

[0039] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the utility model, it needs to explain, unless otherwise expressly provided and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] As shown in the accompanying Figure 1 and the accompanying Figure 2 The utility model embodiment provides a positioning tool for accelerator coupler, including mobile base 10, second adjusting platform 41, third direction adjusting mechanism 40 and mounting bracket 50, wherein mounting bracket 50 is used for fixing coupler 60, make it with positioning tool stable connection, mobile base 10 can drive the whole positioning tool and coupler 60 on it to move, for realizing the position adjustment of a wide range of device, so that coupler 60 is roughly aligned with cavity 70, third direction adjusting mechanism 40 corresponds to height direction, for adjusting the height of second adjusting mechanism and coupler 60, so that the height of coupler 60 is very close to the connecting port on cavity 70, can also adjust the levelness of second adjusting mechanism and coupler 60, so that the interface axis of coupler 60 is parallel with the axis of cavity 70 connecting port in height direction, and mounting bracket 50 is movably arranged on second adjusting platform 41 through adjusting mechanism, and the adjusting mechanism is used for adjusting the position and horizontal offset angle of mounting bracket 50 and coupler 60 on it in horizontal direction, based on the above structure, the positioning tool can adjust the coupler 60 on mounting bracket 50 in 3 translational degrees of freedom and 3 rotational degrees of freedom, the adjustment direction is various, and the coarse adjustment and fine adjustment are combined, not only improve the adjustment efficiency, also make the adjustment accuracy higher. With the above positioning tool, even if manual operation is used, the efficiency is much higher than that of pure manual adjustment.

[0042] It is worth noting that, for the convenience of description, the following embodiments define the height direction as the Z-axis direction, the front-to-back orientation of the coupler 60 in the horizontal direction with the connection port of the cavity 70 as the Y-axis direction, and the far-to-near orientation of the coupler 60 in the horizontal direction with the connection port of the cavity 70 as the X-axis direction. The X-axis, Y-axis, and Z-axis are directions perpendicular to each other, and the adjustment mechanism and the second adjustment platform 41 are not necessarily completely horizontal and perpendicular to the Z-axis direction, and there may be a certain inclination. The adjustment mechanism is not necessarily parallel to the Y-axis direction or the X-axis direction, and there may be a certain horizontal offset angle, that is, there is an angle of less than 90 degrees with the Y-axis direction, so that the coupler 60 has 3 translational degrees of freedom and 3 rotational degrees of freedom when installed, so that the coupler 60 can be precisely docked with the connection ports of the cavity 70 at different angles and positions.

[0043] like Figure 1 and Figure 2 As shown, the third direction adjustment mechanism 40 of this embodiment includes four independently controlled electric push rods 42, and the four electric push rods 42 correspond to the four corners of the second adjustment platform 41 respectively, and are rotatably connected to the second adjustment platform 41 respectively; each electric push rod 42 can work independently, and the moving end is connected to the second adjustment platform 41 through a bearing seat. When the four electric push rods 42 move upward at the same time, the second adjustment platform 41 maintains the current level and moves upward; when the four electric push rods 42 move downward at the same time, the second adjustment platform 41 maintains the current level and moves downward; when the two electric push rods 42 relatively close to the cavity 70 move upward with a smaller amplitude than the two electric push rods 42 away from the cavity 70, or when the two electric push rods 42 relatively close to the cavity 70 move downward with a smaller amplitude than the two electric push rods 42 away from the cavity 70, or when the two electric push rods 42 relatively close to the cavity 70 move upward with a smaller amplitude than the two electric push rods 42 away from the cavity 70, or when the two electric push rods 42 relatively close to the cavity 70 move upward with a smaller amplitude When the downward movement amplitude is greater than that of the two electric push rods 42 away from the cavity 70, the second adjustment platform 41 is tilted and pressed down toward the cavity 70. When the upward movement amplitude of the two electric push rods 42 relatively away from the cavity 70 is smaller than that of the two electric push rods 42 close to the cavity 70, or the downward movement amplitude of the two electric push rods 42 relatively away from the cavity 70 is greater than that of the two electric push rods 42 close to the cavity 70, the second adjustment platform 41 is tilted and tilted relative to the cavity 70. Of course, the horizontality and height of the second adjustment platform 41 can also be adjusted by the difference in movement amplitude between a single electric push rod 42 and other moving push rods; the horizontality and height of the second adjustment platform 41 can also be adjusted by using a method in which the movement direction of at least one electric push rod 42 is opposite to the movement direction of other moving push rods.

[0044] It should be noted that the moving ends of the electric push rods 42 of this embodiment are respectively connected to the second adjustment platform 41 through bearing seats, so that the electric push rods 42 and the second adjustment platform 41 can form different inclination angles, and the second adjustment platform 41 can be appropriately deformed to adapt to the different moving end heights of the four electric push rods 42.

[0045] As attached Figure 3 and attached Figure 4As shown, the adjusting mechanism of the embodiment includes a first adjusting platform 21, the first direction adjusting mechanism 20 and the second direction adjusting mechanism 30, the first adjusting platform 21, the first direction adjusting mechanism 20 and the second direction adjusting mechanism 30 and the mounting bracket 50 are all arranged on the second adjusting platform 41, the mounting bracket 50 is fixed on the first adjusting platform 21, and the first adjusting platform 21 is movably connected with the second direction adjusting mechanism 30 through the first direction adjusting mechanism 20; wherein the first direction adjusting mechanism 20 is used for adjusting the position of the mounting bracket 50 in the first direction, and the second direction adjusting mechanism 30 is used for adjusting the position of the first adjusting platform 21 and the mounting bracket 50 thereon in the second direction; the second direction adjusting mechanism 30 is linked with the first direction adjusting mechanism 20 to adjust the horizontal offset angle of the first adjusting platform 21 and the mounting bracket 50 thereon, so as to realize the forward-backward and left-right movement of the mounting bracket 50 and the coupler 60 in the horizontal direction and the adjustment of the horizontal deflection angle.

[0046] The forward-backward and left-right movement in the horizontal direction is relatively simple, which can be realized by means of linear cylinders, electric push cylinders or linear motors, or can be combined with guide structures such as slide rails and slide grooves to improve the movement precision; these devices all have movable ends, and correspondingly, the first direction adjusting mechanism 20 includes two first movable ends capable of moving independently in the first direction, and the movement of the first adjusting platform 21 in the first direction can be realized by means of the cooperation of the first movable ends and the first adjusting platform 21; the second direction adjusting mechanism 30 includes two groups of second sliding components arranged in parallel and controlled independently, each second sliding component extends in the second direction and includes a second movable end, thereby realizing the movement of the first adjusting platform 21 in the second direction; and the adjustment of the horizontal offset angle relies on the cooperation between the first direction adjusting mechanism 20 and the second direction adjusting mechanism 30, that is, the two first movable ends of the first direction adjusting mechanism 20 are respectively connected with the second movable ends of the two groups of second sliding components.

[0047] Specifically, the second direction adjusting mechanism 30 includes two groups of second sliding components arranged in parallel and controlled independently, each second sliding component includes a second slide rail 31 fixedly connected with the second adjusting platform 41 and a second sliding block 32 sliding on the corresponding second slide rail 31, the second slide rail 31 extends in the second direction (Y-axis direction), and the second sliding block 32 moves on the second slide rail 31 to adjust the position of the mounting bracket 50 in the second direction (Y-axis direction).

[0048] It should be noted that the X-axis, Y-axis and Z-axis are perpendicular to each other, and due to the levelness problem of the second adjusting platform 41, the extension direction of the second slide rail 31 does not completely coincide with the Y-axis direction, therefore, the extension of the second slide rail 31 in the second direction can be considered as that the extension direction of the second slide rail 31 is approximately the Y-axis direction, and a small angle less than 90° in the X-axis or Z-axis direction is allowed.

[0049] The first direction adjusting mechanism 20 further comprises a first sliding assembly on the lower surface of the first adjusting platform 21, the first sliding assembly comprising a first sliding rail 22 fixedly connected with the first adjusting platform 21, and two first sliding blocks 23 in sliding cooperation with the first sliding rail 22, the first sliding rail 22 extending in the first direction (X-axis direction), and the first sliding blocks 23 moving along the first sliding rail 22 for adjusting the position of the mounting bracket 50 in the first direction.

[0050] The first sliding rail 22 is transversely arranged on the two second sliding rails 31, and the two first sliding blocks 23 are rotatably connected with the two second sliding blocks 32 respectively, and the distance between the two first sliding blocks 23 is adjustable for adjusting the horizontal offset angle of the mounting bracket 50.

[0051] Since the two groups of second sliding assemblies in the second direction adjusting mechanism 30 are independently controlled, the two second movable ends, i.e., the second sliding blocks 32, can move synchronously or asynchronously; when the two second sliding blocks 32 move synchronously, the distance between the two first sliding blocks 23 remains unchanged, and the first adjusting platform 21, the mounting bracket 50 and the coupler 60 are driven to move in the Y-axis direction, of course, based on the levelness of the second adjusting platform 41 and the horizontal offset angle of the first adjusting platform 21, the coupler 60 can also produce a small movement in the X-axis or Z-axis direction; when the two second sliding blocks 32 move asynchronously, the distance between the two first sliding blocks 23 changes, and the horizontal offset angle of the first adjusting platform 21, the mounting bracket 50 and the coupler 60 also changes, so that the coupler 60 swings in the horizontal direction relative to the connecting port on the cavity 70, and is more accurately aligned.

[0052] Similarly, it should be noted that, due to the second direction adjusting mechanism 30 and the third direction adjusting mechanism 40, the extension direction of the first sliding rail 22 does not completely coincide with the X-axis direction, therefore, the extension of the first sliding rail 22 in the first direction can be considered as that the extension direction of the first sliding rail 22 is approximately the X-axis direction, allowing a small included angle less than 90° in the Y-axis or Z-axis direction. The extension direction of the first sliding rail 22 coincides with the axial direction of the coupler 60.

[0053] When the two second movable ends move asynchronously, the distance between the two first movable ends changes, and the connection angle between the second movable end and the first movable end also changes, therefore, the first movable end and the second movable end are rotatably connected, specifically, the second movable end has a positioning cylinder, and the lower surface of the first movable end has a positioning sleeve, the positioning sleeve being sleeved on the positioning cylinder, so that the first movable end and the corresponding second movable end are rotatably connected; in the embodiment, when the first movable end is the first sliding block and the second movable end is the second sliding block, as shown in FIG. 6, the first sliding block 23 has a positioning cylinder 231, and the second sliding block 32 has a positioning sleeve 321 sleeved on the positioning cylinder 231. Figure 4 and FIG. 7, the first movable end is the first sliding block 23, and the second movable end is the second sliding block 32, the first sliding block 23 has a positioning cylinder 231, and the second sliding block 32 has a positioning sleeve 321 sleeved on the positioning cylinder 231. Figure 5As shown, the upper surface of the second slider 32 has a positioning cylinder 33, and the lower surface of the first slider 23 has a positioning sleeve 24, which is sleeved on the positioning cylinder 33, so that the first slider 23 is rotationally connected with the corresponding second slider 32, that is, rotates by a certain angle in the Z-axis direction, and the rotation angle is equivalent to the changed horizontal offset angle.

[0054] The first direction adjusting mechanism 20 can be manually adjusted or automatically adjusted. As preferred, the automatic movement has higher accuracy, and therefore, in the preferred embodiment, the first sliding assembly further comprises a first power member, the fixed end of which is fixedly connected with one of the first sliders 23, and the movable end of which is fixedly connected with the first adjusting platform 21 to drive the first adjusting platform 21 and the mounting bracket 50 to move in the first direction.

[0055] When adjustment in the first direction is needed, only one first slider can be actively moved, avoiding the motion interference between the two first sliders and ensuring smooth sliding of the two first sliders on the first sliding rail. When adjustment of the horizontal offset angle is needed, the power member is also working, and therefore, the motion amount needs to be cooperatively calculated with the asynchronous movement amount of the two second sliders, which brings the problems of large amount of calculation and complex motion. Therefore, the power member is generally not working, but since the power member is connected with one first slider and the first adjusting platform, the relative position of the first slider and the first adjusting platform will not change, and therefore, the other first slider needs to freely adjust the distance between the two first sliders to adapt to the displacement difference caused by the asynchronous movement of the two second sliders, which is simple in structure but easier and better in adjustment effect.

[0056] Specifically, as shown in the accompanying drawings, Figure 5 The first power member comprises a first linear lead screw motor 25, a first screw nut 26 and a first nut connecting seat 27. The first linear lead screw motor 25 is fixedly connected with one of the first sliders 23. The first screw nut 26 is threadedly connected with the screw rod of the first linear lead screw motor 25. The first nut connecting seat 27 is fixedly connected with the first screw nut 26. The first adjusting platform 21 is connected with the first nut connecting seat 27. The screw rod of the first linear lead screw motor 25 is parallel to the first sliding rail 22, and the other end of the screw rod is connected with the first adjusting platform 21 through a vertical outer spherical bearing seat. The rotation of the screw rod of the first linear lead screw motor 25 causes the relative movement of one of the first sliders 23 and the first adjusting platform 21 fixedly connected with the first sliding rail 22, so as to more accurately adjust the position of the mounting bracket 50 and the coupler 60 on the first adjusting platform 21 in the X direction, and make the coupler 60 accurately fit the connecting port on the accelerator cavity 70.

[0057] In order to more stably fix the first linear lead screw motor 25, at least one side of one of the first sliders 23 is provided with a fixing plate 28, which is L-shaped, one end of which is fixedly connected with the first slider 23 and the first linear lead screw motor 25, and the other end of which is provided with a through hole 281 through which the lead screw of the first linear lead screw motor 25 passes, and the first linear lead screw motor 25 is fixedly connected with the first slider 23 to transmit the rotating force of the lead screw to the first lead screw nut 26.

[0058] The second sliding assembly in the embodiment can be manually pushed or automatically moved. As preferred, the automatic movement has higher accuracy, and therefore, in the preferred embodiment, the second sliding assembly further comprises second power members, output ends of the second power members being respectively fixedly connected with the second sliders 32 to drive the second sliders 32 to move along the second sliding rails 31; the two second power members in the second direction adjusting mechanism 30 independently operate.

[0059] Specifically, the second power members comprise a second linear lead screw motor 34, a second lead screw nut 35 and a second nut connecting seat 36, the second linear lead screw motor 34 being fixed on the second adjusting platform 41, the second lead screw nut 35 being threadedly connected with a lead screw of the second linear lead screw motor 34, the second nut connecting seat 36 being fixedly connected with the second lead screw nut 35, the second slider 32 being connected with the second nut connecting seat 36, the lead screw of the second linear lead screw motor 34 being parallel to the second sliding rail 31, and the other end of the lead screw being connected with the second adjusting platform 41 through a vertical outer spherical bearing seat, so as to ensure the stability of the lead screw and the stable movement of the second slider 32 on the second sliding rail 31, realize the accurate control of the second slider 32, and more accurately adjust the position of the coupler 60 in the Y-axis direction and the horizontal offset angle, so as to accurately align with the connecting port on the cavity 70.

[0060] Similarly, the second linear lead screw motor 34 is fixed on the second adjusting platform 41 through an L-shaped mounting plate 37 to ensure the firm installation of the second linear lead screw motor 34.

[0061] Further, the moving base 10 needs to have a more stable and firm structure as a base for bearing other components, and specifically, as shown in FIG. 1, the moving base 10 comprises a base plate 11 and a plurality of supporting columns 12, the base plate 11 being provided with a plurality of through holes 111, the supporting columns 12 being fixedly connected with the base plate 11 through the through holes 111. Figure 2As shown, in a preferred embodiment, the mobile base 10 includes a frame 11, a bottom platform 12 and four universal wheels 13. The bottom platform 12 is fixed to the upper surface of the frame 11, and the four universal wheels 13 are respectively fixed to the four corners of the lower surface of the frame 11. The fixed ends of the four electric push rods 42 are fixedly connected to the bottom platform 12. Preferably, the frame 11 is made of industrial aluminum profiles, which has the advantages of high strength and light weight. It can be easily pushed in conjunction with the universal wheels 13, and it is easier to drive the positioning tooling and the coupler 60 to move over a large range. Preferably, the universal wheels 13 are all equipped with brakes to ensure that the positioning tooling does not move after determining the approximate position, which is also beneficial to the stability of the interface during docking.

[0062] like Figure 5 As shown, in order to adapt to the shape of the coupler 60, the mounting bracket 50 in this embodiment includes a top arc-shaped support member 51 and a support frame 52. The top arc-shaped support member 51 forms a mounting groove 511 with an opening facing upward. The coupler 60 is placed in the mounting groove 511 and positioned. The support frame 52 connects the first adjustment platform 21 and the top arc-shaped support member 51; horizontally extending extension plates 512 are also provided on both sides of the top arc-shaped support member 51, and positioning holes 513 are provided on the extension plates 512. When necessary, restraint materials can be used in conjunction with the positioning holes 513 to further fix the coupler 60.

[0063] The coupler 60 will be tested for air tightness during formal installation. Figure 6 As shown, when the coupler 60 is assembled using the positioning fixture bracket of this embodiment, it can be used to move the coupler 60 to dock with the interface of the molecular pump so that the interface is fully docked and tested.

[0064] After the test, the coupler 60 is moved to the vicinity of the accelerator by the positioning fixture, and the positioning fixture is controlled to adjust the position and posture of the coupler 60 to the interface so that it fits tightly with the connection interface to complete the final installation. Figure 7 shown.

[0065] Specifically, the positioning tooling of this embodiment adopts an adjustment method from bottom to top: first, the base 10 is moved to achieve a large range of adjustment of the positioning of the coupler 60 during installation; then the height and horizontality of the coupler 60 are adjusted by the third direction adjustment mechanism 40, and then the position and horizontal offset angle of the coupler 60 on the Y axis are adjusted by the second direction adjustment mechanism 30, and finally, the first direction adjustment mechanism 20 is used to make the coupler 60 close to and fit the connection port on the accelerator cavity 70, and finally achieve docking.

[0066] When manually operating the positioning fixture, multiple fine adjustments can be made. The combined adjustment of the first, second, and third direction adjustment mechanisms 20, 30, and 40 allows for precise positioning of the coupler 60 during testing and installation. With the positioning fixture, even with manual operation, efficiency is far superior to purely manual adjustments.

[0067] The positioning tooling of this embodiment can also be combined with machine vision and other methods to achieve fully automatic operations of automatic measurement, automatic positioning and automatic adjustment, further improving the docking accuracy. The specific judgment method can adopt the existing machine vision algorithm, which will not be repeated here.

[0068] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A positioning fixture for an accelerator coupler, characterized in that: include: Mobile base, The second adjustment platform is movably arranged on the mobile base. a third direction adjustment mechanism, connected to the second adjustment platform and the movable base, for adjusting the height and levelness of the second adjustment platform; The mounting bracket is used to mount the coupler and is movably arranged on the second adjustment platform through an adjustment mechanism. The adjustment mechanism is used to adjust the horizontal position and horizontal offset angle of the mounting bracket.

2. The positioning tool according to claim 1, characterized in that: The adjustment mechanism includes a first adjustment platform, a first direction adjustment mechanism, and a second direction adjustment mechanism. The mounting bracket is fixed on the first adjustment platform, and the first adjustment platform is movably connected to the second direction adjustment mechanism through the first direction adjustment mechanism. The first direction adjustment mechanism is used to adjust the position of the mounting bracket in the first direction. The second direction adjustment mechanism is used to adjust the position of the first adjustment platform and the mounting bracket thereon in the second direction; The second direction adjustment mechanism is linked to the first direction adjustment mechanism to adjust the horizontal offset angle of the first adjustment platform and the mounting bracket thereon.

3. The positioning tool according to claim 2, characterized in that: The first direction adjustment mechanism includes two first movable ends that can independently move along the first direction, and the second direction adjustment mechanism includes two sets of second sliding assemblies arranged in parallel and independently controlled, each of the second sliding assemblies extends along the second direction and includes a second movable end; The two first movable ends of the first direction adjustment mechanism are respectively connected to the second movable ends of the two groups of the second sliding components.

4. The positioning tool according to claim 3, characterized in that: The first direction adjustment mechanism further includes a first slide rail, the two first movable ends are first sliders, and the two first sliders are slidably sleeved on the first slide rail at intervals; The second sliding assembly further includes a second slide rail, the second movable end is a second slider, one second slider is correspondingly slidably sleeved on one second slide rail, and the second slide rail extends along the second direction; The first slide rail spans over the two second slide rails, and the two first sliders are rotatably connected to the two second sliders respectively.

5. The positioning tool according to claim 4, characterized in that: The first direction adjustment mechanism further includes a first power member, a fixed end of the first power member is fixedly connected to one of the first sliders, and an output end is fixedly connected to the first adjustment platform to drive the first adjustment platform and the mounting bracket to move along the first direction.

6. The positioning tool according to claim 3 or 4, characterized in that: The second movable end is provided with a positioning cylinder, and the lower surface of the first movable end is provided with a positioning sleeve. The positioning sleeve is sleeved on the positioning cylinder, so that the first movable end is rotatably connected with the corresponding second movable end.

7. The positioning tool according to claim 1, characterized in that: The third direction adjustment mechanism includes four independently controlled electric push rods, which respectively correspond to the four corners of the second adjustment platform and are rotatably connected to the second adjustment platform.

8. The positioning tool according to claim 1, characterized in that: The mounting bracket includes a top arc-shaped support member and a support frame, and the support frame connects the adjustment mechanism and the top arc-shaped support member; horizontally extending extension plates are also provided on both sides of the top arc-shaped support member, and positioning holes are provided on the extension plates.

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